title: Influence of femoral lengthening on hip joint space in posttraumatic femoral shortening.
abstract: We performed femoral lengthening for post-traumatic femoral shortening in 14 patients (10 men). The mean age was 26 (17-33) years. The callotasis method was employed using an Orthofix or Hifixator monolateral external fixator. The average length gained was 6 (3-13) cm, equal to 16 (7-36)%. The mean narrowing ratio of the hip joint space during lengthening was 9 (0-26)% and the narrowing persisted at the final follow-up. Cases with narrowing greater than 5% had a longer time between the development of the shortening and the lengthening than the others (p = 0.03). Our findings indicate that femoral lengthening for posttraumatic femoral shortening should be done as early as possible to prevent the development of joint space narrowing during the lengthening procedure.
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Medicine, University of Tokyo, Japan. hungsc@vghtpe.gov.tw
authors.forename: S C
authors.initials: SC
authors.lastname: Hung
authors.forename: K
authors.initials: K
authors.lastname: Nakamura
authors.forename: T
authors.initials: T
authors.lastname: Matsushita
authors.forename: H
authors.initials: H
authors.lastname: Okazaki
authors.forename: R
authors.initials: R
authors.lastname: Shiro
authors.forename: K
authors.initials: K
authors.lastname: Mamada
authors.forename: K
authors.initials: K
authors.lastname: Tanaka
authors.forename: W
authors.initials: W
authors.lastname: Ou
authors.forename: T
authors.initials: T
authors.lastname: Kurokawa
mesh_terms: D000293:Adolescent; D000328:Adult; D001852:Bone Lengthening / Q000009:adverse effects*; D016267:External Fixators; D005260:Female; D005264:Femoral Fractures / Q000150:complications* / Q000473:pathology / Q000601:surgery; D005269:Femur / Q000601:surgery*; D006621:Hip Joint / Q000473:pathology*; D006801:Humans; D008297:Male